/*
 *  Copyright 2008 Danny Lagrouw
 *  
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *  
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License. 
 */
package org.bastion.service;

import java.util.List;
import java.util.Map;

import org.bastion.query.Matcher;

public interface QueryService {

	<T> List<T> executeQuery(Class<T> clazz);

	<T> List<T> executeQuery(Class<T> clazz, Matcher<T> matcher);

	<T> List<T> executeQuery(Class<T> clazz, String queryName,
			Map<String, Object> parameters);

	/**
	 * Indicates if this Query Service prefers executing named queries.
	 * 
	 * @return
	 */
	boolean prefersNamedQueries();

	/**
	 * Indicates if this Query Service supports executing predicate queries.
	 * 
	 * @return
	 */
	boolean supportsPredicateQueries();

	/**
	 * Indicates if this Query Service prefers executing predicate queries.
	 * 
	 * @return
	 */
	boolean prefersPredicateQueries();

	/**
	 * Indicates if this Query Service supports executing named queries.
	 * 
	 * @return
	 */
	boolean supportsNamedQueries();

}
